arbon Capture and Storage (CCS) is the process of capturing CO2 from power plants or energyintense industries and transferring it to long-term geological storage systems, therefore assisting climate change mitigation efforts. Considering this, the technology continues to be questioned, with local opposition frequently encountered when individual projects are approved. As a result, societal acceptance is a critical component of the technology’s continued development and diffusion. In light of this, the MOF4AIR (Metal Organic Frameworks for Carbon Dioxide Adsorption in Power Production and Energy Intensive Industries) Horizon project (2019-2023) includes specific tasks linked to the investigation of CCS-associated societal concerns.

Carbon Capture and Storage (CCS) refers to the capture of carbon dioxide (CO2) from energy or heavy industry processes and its redirection to long-term geological storage structures (e.g. depleted oil wells). This way, CCS can contribute to global efforts to mitigate climate change. However, it remains a controversial technology that often faces public resistance in terms of acceptance of specific projects. Therefore, the fact that social acceptance of CCS infrastucture is a prerequisite for the further development and dissemination of this technology should not be overlooked.

CARMOF, MEMBER and MOF4AIR are three European-funded projects geared to demonstrate innovative CO2 capture technologies in real industrial conditions. Promising new material solutions are under development for the next generation of CCUS technologies that are expected to reach the markets in the next few years.
The CARMOF project group has come together under the umbrella of the Horizon Results Booster programme (HRB) of the European Commission to jointly collaborate on addressing common goals toward the 2050 targets of reducing CO2 emissions in energy-intensive companies.

The H2S stability of a range of MOFs was systematically assessed by first-principle calculations. The most likely degradation mechanism was first determined and we identified the rate constant of the degradation reaction as a reliable descriptor for characterizing the H2S stability of MOFs. A qualitative H2S stability ranking was thus established for the list of investigated materials. Elemental structure-stability relationships were further envisaged considering several variables including the nature of the linkers and their grafted functional groups, the pore size, the nature of metal sites and the presence/nature of coordinatively unsaturated sites. This knowledge enabled the anticipation of the H2S stability of one prototypical MOF, e.g. MIL-91(Ti), which has been previously proposed as a good candidate for CO2 capture. This computational strategy enables an accurate and easy handling assessment of the H2S stability of MOFs and offers a solid alternative to experimental characterizations that require the manipulation of a highly toxic and corrosive molecule.

Les Metal-Organic Frameworks (MOFs) sont des solides hybrides (organique/inorganique) micro- ou méso-poreux ordonnés. L’engouement scientifique et technologique pour cette famille de composés ne cesse de croître au vu de leur grande diversité chimique et structurale, et de leurs nombreuses applications potentielles. Cet article propose un aperçu global sur les MOFs, notamment sur leurs modes de synthèses et les méthodes de caractérisations, leurs structures, leurs propriétés aisément modulables ainsi que certains exemples représentatifs d’applications potentielles. De plus, leur mise à l’échelle à moindre coût par des procédés respectueux de l’environnement, ainsi que leur mise en forme sont discutées.

 Carbon capture, utilisation and storage (CCUS) is a key element in the EU low-carbon policy. The European Union has created an ambitious objective to be climate-neutral by 2050, that is, to be an economy with net-zero greenhouse gas emissions. The European Green Deal codifies this objective, and all economic sectors are participating in its realisation. In April 2021, the EU set a target of cutting carbon emissions by 55% by 2030. CARMOF, MEMBER and MOF4AIR are three European-funded projects developing new material and process solutions for the next generation of CO2 capture technologies that are expected to reach the market in the next few years.